package com.sky.service.impl;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.result.Result;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {


    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;


    public static final String WX_LOGIN ="https://api.weixin.qq.com/sns/jscode2session";
    /**
     *
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {

        String openid = getOpenid(userLoginDTO.getCode());
//        //调用微信接口服务，获得当前微信用户的openid
//        Map<String, String> map = new HashMap<>();
//        map.put("appid",weChatProperties.getAppid());
//        map.put("secret",weChatProperties.getSecret());
//        map.put("js_code",userLoginDTO.getCode() );
//        map.put("grant_type","authorization_code");
//        String json = HttpClientUtil.doGet(WX_LOGIN, map);


//        JSONObject jsonObject = JSON.parseObject(json);
//        String openid = jsonObject.getString("openid");

        //判断openid是否为空，如果为空表示登录失败，抛出业务异常

        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }


        //判断当前用户是否为新用户
        User user = userMapper.getByOpenid(openid);

        if(user==null) {
            //如果不是，直接返回这个用户对象
            //如果是，自动完成注册，
            user = User.builder().openid(openid).createTime(LocalDateTime.now()).build();

            userMapper.insert(user);
        }
        //返回这个用户对象
        return user;
    }

    /**
     *   调用微信接口服务，获得当前微信用户的openid
     * @param code
     * @return
     */

    private String getOpenid(String code)
    {
        Map<String, String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code );
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);


        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");

        return openid;
    }
}
